Question
In: Statistics and Probability
Instructions: Be sure to define all parameters and random variables used. Also, you must provide any...
Instructions: Be sure to define all parameters and random variables used. Also, you must provide any code you use (final computed values are not sufficient). I strongly recommend that you create Jupyter Notebooks for this assignment, embedding your written comments in Markdown cells.
4. A researcher conducts an experiment in a residence for senior citizens to investigate the effect of floor type on the risk of fall-related injury. For 24 randomly selected individuals in the facility, she records the type of flooring (either standard flooring or a new, rubber flooring that absorbs the impact of falls) in their room and whether they sustained at least one fall-related injury in their room over the previous two years. She is interested in whether the rubber flooring is associated with a reduced risk of injury. Her data are available in the file fall.csv.
a. What are the null and alternative hypotheses?
b. What is the value of the test statistic?
c. What is the p-value?
d. State your conclusions in the language of the problem. Use a significance level of 10%.
e. Which assumption is required for the validity of your hypothesis test and why might it be reasonable in this context?
fall.csv. file
"Floor","Injury"
"Standard",0
"Standard",1
"Standard",0
"Standard",1
"Standard",1
"Standard",0
"Standard",0
"Standard",1
"Standard",0
"Standard",0
"Standard",1
"Standard",0
"Standard",1
"Standard",0
"Standard",0
"Standard",1
"Rubber",0
"Rubber",0
"Rubber",0
"Rubber",1
"Rubber",1
"Rubber",0
"Rubber",0
"Rubber",1
Solutions
orchestra answered 2 years agoRelated Solutions
Instructions: Be sure to define all parameters and random variables used. Also, you must provide any...
Instructions: Be sure to define all parameters and random
variables used. Also, you must provide any code you use (final
computed values are not sufficient). I strongly recommend that you
create Jupyter Notebooks for this assignment, embedding your
written comments in Markdown cells.
6. A biologist wishes to examine the collision
avoidance behaviour of bullfrogs housed in experimental boxes. He
placed an object in the upper visual field of each frog and then
moved the object progressively closer until the...
Instructions: Be sure to define all random variables, parameters, etc. Also, you must provide any code...
Instructions: Be sure to define all random variables,
parameters, etc. Also, you must provide any code you use (final
computed values are not sufficient). I strongly recommend that you
create Jupyter Notebooks for this assignment, embedding your
written comments in Markdown cells.
4. Systolic blood pressure was measured on 30 female
diabetics between the ages of 30 and 34 from a particular ethnic
group. Of interest is whether blood pressure, on average, of women
in this population differs from the...
Explain all answers and label any graphs clearly. Be sure to define any notation you introduce....
Explain all answers and label any graphs clearly. Be sure to
define any notation you introduce.
1. Suppose that there are two commodities which are available in
nonnegative amounts. Draw
some pictures of indifference curves for preference relations
having the following properties:
(a) Strictly (or strongly) convex but not monotone.
(b) Convex and strictly monotone but not strictly (or strongly)
convex.
(c) Convex but not strictly (or strongly) convex AND monotone
but not strictly (or strongly)
monotone.
(d) Not convex....
SHOW ALL WORK AND IF THERE ARE ANY VARIABLES USED, EXPLAIN HOW YOU GOT THEM. When...
SHOW ALL WORK AND IF THERE ARE ANY VARIABLES USED, EXPLAIN HOW
YOU GOT THEM.
When the air temperature is below 0 Celsius, the water of a lake
freezes to form an ice sheet. The time required to freeze the ice
sheet is proportional to the thickness squared if the heat of
fusion of the water freezing on the underside of the sheet is
conducted through the sheet. Assuming the upper surface of the
sheet is at -10 Celsius and...
In each problem, make sure that you are clearly defining random variables, stating their distributions, and...
In each problem, make sure that you are clearly defining random
variables, stating their distributions, and writing down the
formulas that you are using. (That is, write down the pmf, write
down mean and variance formulas.
4. In the video game Dota 2, the character Phantom Assassin has
a 0.15 chance to land a critical hit with every attack. Assume that
each attack is independent from the previous attacks. (They
actually aren’t, but we’ll simplify the problem by making this...
A student hasn’t studied at all and therefore guesses each answer uniformly at random, independently of all the other answers. Define the following random variables:
A student hasn’t studied at all and therefore guesses each answer uniformly at random, independently of all the other answers. Define the following random variables:
• R: the number of answers the student gets right
• W: the number of answers the student does not get right
• S: the student’s score on the test
Q1a:
What is the distribution of R? Either state the possible values and provide a formula for the probabilities, or provide the name and...
Let X and Y be independent Gaussian(0,1) random variables. Define the random variables R and Θ,...
Let X and Y be independent Gaussian(0,1) random variables.
Define the random variables R and Θ, by R2=X2+Y2,Θ = tan−1(Y/X).You
can think of X and Y as the real and the imaginary part of a
signal. Similarly, R2 is its power, Θ is the phase, and R is the
magnitude of that signal.
(b) Find the probability density functions of R and Θ. Are R and
Θ independent random variables?
what is phototherapy and why it is used. You must also play the role of a...
what is phototherapy and why it is used. You must also play the
role of a community health nurse and explain how you would educate
expecting mothers about the dangers of substance abuse during
pregnancy, include in your explanation how you would try and
prevent substance abuse during pregnancy. Cite your work. Submit
your answers in this assignment as an attachment.
descriptively detail how methods and applications of discrete random variables and continuous random variables are used...
descriptively detail how methods and applications of discrete
random variables and continuous random variables are used to
support areas of industry research, academic research, and
scientific research.
Answer using excel and please provide excel instructions for all outputs meaning what formula was used...
Answer using excel and please provide excel instructions
for all outputs meaning what formula was used to calculate the
output and how was it implemented using excel and which excel
functions to use. Thank you.
Conch Republic Electronics is a midsized electronics
manufacturer located in Key West, Florida. The company president is
Shelly Couts, who inherited the company. The company originally
repaired radios and other household appliances when it was founded
over 70 years ago. Over the years, the company...
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